Midwinter Thaw

I have a question for you to ponder - you don't need to answer but I am interested if you feel like answering.

A:

Snow shrivels away to a sickly shade of gray, vanishing quickly.

B:

Snow shrivels away
to a sickly shade of gray,
vanishing quickly.

C:

Snow shrivels away
to a sickly
shade of gray,
vanishing quickly.

Everything's the same but the line breaks. Which is best?